scholarly journals Interest of Flow Diversion Prostheses in the Management of Unruptured Intracranial Aneurysms

2012 ◽  
Vol 2012 ◽  
pp. 1-5 ◽  
Author(s):  
Xavier Armoiry ◽  
Mélanie Paysant ◽  
Daniel Hartmann ◽  
Gilles Aulagner ◽  
Francis Turjman
Keyword(s):  
Intracranial Aneurysms ◽  
New Technology ◽  
Flow Diversion ◽  
Current Status ◽  
Metallic Surface ◽  
Endovascular Coiling ◽  
Surgical Clipping ◽  
Unruptured Intracranial Aneurysms ◽  
Endovascular Approach ◽  
Wide Neck

Flow diversion prostheses represent a new endovascular approach aimed at treating patients with large wide-neck aneurysms. Our objective is to present this new technology, to review the clinical studies on efficacy, and to emphasize its current limits. Flow diversion prostheses consist of a cylinder made of a large number of braided microfilaments providing a large metallic surface when deployed and inducing a blood flow diversion outside the aneurysm. Two different brands are currently available. Clinical data supporting their efficacy are currently limited to six non comparative cohort studies that included between 18 and 107 patients. Procedural implantation was shown to be feasible in more than 90% and safe with a thirty-day mortality between 2.8 and 5.5%. Complete occlusion rates at twelve months varied between 85.7 and 100%. Even though promising, the current status of flow diversion prostheses needs further evaluation with randomized, prospective, clinical trials with comparison to conventional strategies including endovascular coiling or surgical clipping.

scholarly journals C.03 Surgical clipping or endovascular coiling for unruptured intracranial aneurysms: a pragmatic randomized trial

2017 ◽  
Vol 44 (S2) ◽  
pp. S12-S13
Author(s):  
TE Darsaut ◽  
Keyword(s):  
Randomized Trial ◽  
Intracranial Aneurysms ◽  
Primary Outcome ◽  
Morbidity And Mortality ◽  
Neurological Deficits ◽  
Endovascular Coiling ◽  
Surgical Clipping ◽  
Microsurgical Clipping ◽  
Unruptured Intracranial Aneurysms ◽  
One Year

Background: Unruptured intracranial aneurysms (UIAs) are treated using endovascular treatment or microsurgical clipping. The safety and efficacy of treatments have not been compared in a randomized trial. Methods: We randomly allocated clipping or coiling to patients with 3-25mm UIAs judged treatable both ways. The primary outcome was treatment failure, defined as: initial failure of aneurysm treatment, intracranial hemorrhage or residual aneurysm on one year imaging. Secondary outcomes included neurological deficits following treatment, hospitalization >5 days, overall morbidity and mortality and angiographic results at one year. Results: 136 patients were enrolled from 2010 through 2016 and 134 patients were treated. The one-year primary outcome, available for 104 patients, was reached in 5/48 (10.4% (4.5%-22.2%)) patients allocated surgical clipping, and 10/56 (17.9% (10.0%-29.8%)) patients allocated endovascular coiling (OR: 0.54 (0.13, 1.90), P=0.40). Morbidity and mortality (mRS>2) at one year occurred in 2/48 (4.2% (1.2%-14.0%)) and 2/56 (3.6% (1.0%-12.1%)) patients allocated clipping and coiling respectively. New neurological deficits (15/65 vs 6/69; OR: 3.12 (1.05, 10.57), P=0.031), and hospitalizations beyond 5 days (30/65 vs 6/69; OR: 8.85 (3.22,28.59), P=0.0001) were more frequent after clipping. Conclusions: Surgical clipping led to greater initial treatment-related morbidity than endovascular coiling. At one year, the superior efficacy of clipping remains unproven and in need of randomized evidence.

Long-term Economic Impact of Coiling vs Clipping for Unruptured Intracranial Aneurysms

Neurosurgery ◽  
2013 ◽  
Vol 72 (6) ◽  
pp. 1000-1013 ◽  
Author(s):  
Shivanand P. Lad ◽  
Ranjith Babu ◽  
Michael S. Rhee ◽  
Robbi L. Franklin ◽  
Beatrice Ugiliweneza ◽  
...  
Keyword(s):  
Postoperative Complications ◽  
Propensity Score ◽  
Propensity Score Matching ◽  
Intracranial Aneurysms ◽  
The United States ◽  
Endovascular Coiling ◽  
Complication Rates ◽  
Surgical Clipping ◽  
Unruptured Intracranial Aneurysms ◽  
Reoperation Rates

Abstract BACKGROUND: Treatment of unruptured intracranial aneurysms (UIAs) involves endovascular coiling or aneurysm clipping. While many studies have compared these treatment modalities with respect to various clinical outcomes, few studies have investigated the economic costs associated with each procedure. OBJECTIVE: To determine the reoperation rate, postoperative complications, and inpatient and outpatient costs associated with surgical or endovascular treatment of patients with UIAs in the United States. METHODS: We utilized the MarketScan database to examine patients who underwent surgical clipping or endovascular coiling procedures for UIAs from 2000 to 2009, comparing reoperation rates, complications, and angiogram and healthcare resource use. Propensity score matching techniques were used to match patients. RESULTS: We identified 4,504 patients with surgically treated UIAs, with propensity score matching of 3,436 patients. Reoperation rates were significantly lower in the clipping group compared to the coiling group at 1- (P < .001), 2- (P < .001), and 5 years (P < .001) following the procedure. However, postoperative complications (immediate, 30 and 90 days) were significantly higher in those undergoing surgical clipping. Although hospital length of stay and costs were higher in the clipping group for the index procedure, the number of postoperative angiograms and outpatient services used at 1, 2, and 5 years were significantly higher in the coiling group. CONCLUSION: Though surgical clipping resulted in lower reoperation rates, it was associated with higher complication rates and initial costs. However, overall costs at 2 and 5 years were similar to endovascular coiling due to the significantly higher number of follow-up angiograms and outpatient costs in these patients.

Direct Costs of Surgical Clipping and Endovascular Coiling of Unruptured Intracranial Aneurysms

2006 ◽  
Vol 22 (1) ◽  
pp. 40-45 ◽  
Author(s):  
Patricia H.A. Halkes ◽  
Marieke J.H. Wermer ◽  
Gabriël J.E. Rinkel ◽  
Erik Buskens
Keyword(s):  
Intracranial Aneurysms ◽  
Direct Costs ◽  
Endovascular Coiling ◽  
Surgical Clipping ◽  
Unruptured Intracranial Aneurysms

Thromboelastography (TEG) results are predictive of ischemic and hemorrhagic complications in patients with unruptured intracranial aneurysms treated with flow diversion

2021 ◽  
pp. 159101992110259
Author(s):  
Kainaat Javed ◽  
Santiago R Unda ◽  
Ryan Holland ◽  
Adisson Fortunel ◽  
Rose Fluss ◽  
...  
Keyword(s):  
Ischemic Stroke ◽  
Intracranial Aneurysms ◽  
Statistical Significance ◽  
Alpha Angle ◽  
Flow Diversion ◽  
P Value ◽  
Hemorrhagic Complication ◽  
Unruptured Intracranial Aneurysms ◽  
Hemorrhagic Complications ◽  
Groin Hematoma

Introduction Flow diversion is an effective treatment modality for intracranial aneurysms but is associated with ischemic and hemorrhagic complications. Patients treated with flow diversion require dual antiplatelet therapy and subsequent platelet function tests. At our institution, Thromboelastography with Platelet Mapping (TEG-PM) is the test of choice. The primary objective of this study was to identify TEG parameters that are predictive of postoperative complications in patients treated with elective flow diversion. Methods This was a retrospective study of 118 patients with unruptured intracranial aneurysms treated with flow diversion. Data was collected via chart review. Bivariate analyses were performed to identify significant variables in patients who suffered an ischemic stroke or a groin hematoma. ROC curves were constructed for the TEG parameters with statistical significance. Bivariate analyses were repeated using dichotomized TEG results. Results Patients who experienced a symptomatic ischemic stroke had a history of stroke (p value = 0.007), larger aneurysm neck width (p value = 0.017), and a higher alpha angle (p value = 0.013). Cut off point for ischemic complication is 63° on ROC curve with a sensitivity of 100% and specificity of 65%. Patients who experienced a groin hematoma were no different from their healthy peers but had a lower alpha angle (p value = 0.033). Cut off point for hemorrhagic complication is 53.3° with a sensitivity of 82% and specificity of 67%. Conclusion The Alpha Angle parameter of TEG-PM has a sizeable predictive ability for both ischemic complications of the central nervous system and hemorrhagic complications of the access site after elective flow diversion.

Outcomes following aneurysmal coil embolization with intentionally shortened low-profile visible intraluminal support stent deployment

2021 ◽  
pp. 197140092110269
Author(s):  
Kenji Yatomi ◽  
Yumiko Mitome-Mishima ◽  
Takashi Fujii ◽  
Kohsuke Teranishi ◽  
Hidenori Oishi ◽  
...  
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Coil Embolization ◽  
Intracranial Aneurysms ◽  
Perioperative Complications ◽  
Flow Diversion ◽  
Stent Deployment ◽  
Coverage Ratio ◽  
Low Profile ◽  
Unruptured Intracranial Aneurysms

Purpose Among all stents available for neuroendovascular therapy, the low-profile visible intraluminal support stent bears the highest metal coverage ratio. We deployed a low-profile visible intraluminal support stent with a delivery wire or/and microcatheter system push action to shorten the low-profile visible intraluminal support stent and thus achieve a flow diversion effect. We report our single-institution experience with the use of low-profile visible intraluminal support stents for intentionally shortened deployment (shortening group) and non-shortened deployment (non-shortening group) for unruptured intracranial aneurysms. Methods We retrospectively reviewed the medical records of 130 patients with 131 intracranial aneurysms who were treated with low-profile visible intraluminal support stent-assisted coil embolization from February 2016–January 2019. All perioperative complications were noted. Every 6 months, we re-examined the patients with cerebral angiography or magnetic resonance angiography. The outcomes of aneurysm occlusion were evaluated by the modified Raymond–Roy occlusion classification. We used the finite element method and computational fluid dynamics to investigate the hemodynamics after shortened low-profile visible intraluminal support stent deployment. Results Immediately after treatment, the modified Raymond-Roy occlusion classification was significantly better in the shortening group than in the non-shortening group ( p<0.05). The latest angiographic outcomes showed the same tendency. Hemodynamic analysis by computational fluid dynamics suggested an adequate flow diversion effect with the use of our intentional shortening method. Conclusions Stent-assisted coil embolization using this technique showed good results of a high complete occlusion rate and low complication rate. These findings suggest that shortened low-profile visible intraluminal support stent deployment yields a flow diversion effect and may lead to early intra-aneurysmal thrombus formation.

Improved Endovascular Coiling of Wide-Neck Intracranial Aneurysms in Elderly Patients by Double-Microcatheter Technique

2014 ◽  
Vol 71 (3) ◽  
pp. 1281-1286 ◽  
Author(s):  
Xiang Xu ◽  
Yu Zheng ◽  
Dayong Wang ◽  
Jianzhong Cui ◽  
Xiaoming Shang
Keyword(s):  
Elderly Patients ◽  
Intracranial Aneurysms ◽  
Endovascular Coiling ◽  
Wide Neck

scholarly journals Stent-assisted coiling of unruptured intracranial aneurysms with wide neck

2020 ◽  
Vol 15 (4) ◽  
pp. 821
Author(s):  
ConstantineNikolaos Antonopoulos ◽  
Filippos Papadopoulos ◽  
George Geroulakos
Keyword(s):  
Intracranial Aneurysms ◽  
Unruptured Intracranial Aneurysms ◽  
Wide Neck
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